Advice please πŸ™ƒ update*

I don't know what to do I'm so lost in the head I broke up with my ex in the beginning of August we've been going out for about two years and I had enough of his ways. about 3 weeks in he texts me on a sex note, our relationship was crappy but our sex life was amazing and I basically caved so for the past few weekends we have been having sex but not really talking about anything he just recently spent the weekend together he was thoughtful caring even apologized to me and the time we've been spending nowadays have been better than our whole past relationship. but I can't help but feel it's just a for the moment illusion type of thing... however he came in me and we're not on the best terms because I confronted him about something slightly minor but hurtful and he didn't reply I said he didn't have to explain anything to me but it would've been nice if he said something knowing I felt some type of way. Am I making a mistake beside the fact that I'm taking chances of carrying his child πŸ€¦πŸ½β€β™€οΈ should I end things or say/do nothing and see how things unfold naturally πŸ˜“πŸ˜ͺ
Update: he texted me early this morning and told me he did what he did because he was hurt over the break up and apologized. We texted a little I feel better but still a little off this is all very unexpected.